Talea de Castro’s simple, low-cost mobile phone system has been touted as a model
for other rural communities deemed financially unviable by big telecom firms

The village of Talea de Castro in the Mexican state of Oaxaca is pictured on Aug. 17.

Photo: AFP

Left out by telecom firms like the one owned by billionaire Carlos Slim, a remote Mexican mountain village now runs its own mobile phone network to communicate with the outside world.

Tucked away in a lush forest in the southern state of Oaxaca, the indigenous village of Villa Talea de Castro, population 2,500, was not seen as a profitable market for companies such as Slim’s America Movil.

So the village, under an initiative launched by indigenous groups, civil organizations and universities, put up a perch-like antenna on a rooftop, installed radio and computer equipment, and created its own micro provider called Red Celular de Talea (RCT) this year.

Now, restaurant manager Ramiro Perez can call his children and receive food orders on his cellphone at a cheap price in this village dotted by small homes painted in pink and yellow.

The local service costs 15 pesos (US$1.2) per month — 13 times cheaper than a big firm’s basic plan in Mexico City — while calls to the US, where many of the indigenous Zapoteco residents have migrated, charge a few pennies per minute.

“I have two children who live outside the village and I communicate with them at least two or three times per week,” said Perez, 60.

Before, Perez had to use telephone booths where he paid up to 10 pesos per minute.

The coffee-producing village installed the network with the help of Rhizomatica, a non-profit with US, European and Mexican experts who aim to increase access to mobile telecommunications in communities that lack affordable service.

In a statement, Rhizomatica, a civil group named Redes and a town official said they hoped that a telecom reform pushed through congress by Mexican President Enrique Pena Nieto to open the market will “break the obstacles” that prevent the development of such community-based projects.

“Many indigenous communities have shown interest in participating in this project and we hope that many more can join this scheme,” the statement said.

The equipment used in Talea, which was provided by California-based Range Networks, includes a 900Mhz radio network and computer software that routes calls, registers numbers and handles billing. Calls to the US are channeled via a voice-over Internet protocol (VoIP) provider.

The village received a two-year-permit from the Federal Communications Commission to have the right to test the equipment.

When a cellphone user arrives in the village, a text message automatically appears saying: “Welcome to the Talea Cellular Network (RTC) — to register, go to the radio with this message.”

There is one catch: Phone calls must be limited to a maximum of five minutes to avoid a saturation of lines.

Israel Hernandez, a village resident and one of the volunteers who helped set up the system, said the network uses the radio-electric spectrum that “telephone [service] providers refuse to use because it is financially unviable.”

Slim’s Telcel is part of his America Movil empire, which controls 70 percent of Mexico’s mobile phone market and has 262 million subscribers across Latin America, but never made it to Talea.

Alejandro Lopez, a senior town hall official, said the village had approached big telecom firms, but that they had required 10,000 potential users as well as the construction of a path where an antenna would be erected and a lengthy power line.